Definition of Anthracolithic in US English:

Anthracolithic

adjective

Geology
rare
  • Of, relating to, or including the Permian and Carboniferous periods or systems considered together. Also as noun: the period or system comprising the Permian and Carboniferous.

Origin

Late 19th century. From anthraco- + -lithic.

Pronunciation

Anthracolithic

/ˌanθrəkəˈlɪθɪk/